[Mgx3d] has done that by designing 3D printable bar clamp jaws with a quick release mechanism that can be used with standard T-slot aluminum extrusion. This allows you to create ad-hoc bar clamps ...

Quick-release clamps usually aren't as long as ... When you need to hold two pieces of material together during assembly, a spring clamp is an alternative to a screw clamp. Spring clamps have ...